C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
51-75-12-300-002 Repair of Major Paint Damage on Steel Component 51-77-11-910-008 Preparation of a Corrosion-Resistant Steel Doubler 51-77-14-991-006 Fig. 801
3. Job Set-up
__________
Subtask 51-77-14-941-056
A. Get access to the area to be repaired.
4. Procedure
_________ (Ref. Fig. 801/TASK 51-77-14-991-006) Subtask 51-77-14-918-067 R A. Prepare the repair area:
(1)
Remove the frayed fibres.
(2)
Make the sharp edges smooth with emery paper (grade 100).
Temporary Repair with Corrosion - Resistant Steel Doubler
Figure 801/TASK 51-77-14-991-006
(3) Make the repair area smooth with abrasive cloth (grade 280) and abrasive cloth (grade 400).
WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THE
_______
SPECIAL MATERIAL.
THIS MATERIAL IS DANGEROUS.
(4)
Clean the repair area with CLEANING AGENTS (Material No. 11-004) and a lint free cloth.
(5)
Make a doubler from corrosion-resistant steel (Ref. TASK 51-77-11-910-008).
(6)
Drill and deburr the rivet holes in the doubler.
(7) If necessary countersink the rivet holes.
Subtask 51-77-14-420-050
R B. Install the doubler: NOTE : Use carbide tipped drills when you drill composite material.
____
(1)
Put the doubler over the repair and drill a rivet hole in the skin. Use the doubler as a template.
(2)
Install a rivet in the hole with SEALANTS (Material No. 09-013).
(3)
Drill a second rivet hole in the skin, opposite the rivet already installed. Use the doubler as a template.
(4)
Install a rivet in the second hole with SEALANTS (Material No. 09-013).
(5)
Drill the remaining holes in the skin. Use the doubler as a template.
(6)
Install the remaining rivets in the other holes with SEALANTS (Material No. 09-013).
WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THE
_______
SPECIAL MATERIAL.
THIS MATERIAL IS DANGEROUS.
(7)
Clean the repair area with CLEANING AGENTS (Material No. 11-004) and a lint free cloth. (Ref. Fig. 801/TASK 51-77-14-991-006)
(8)
Apply SEALANTS (Material No. 09-005) to the edges of the doubler.
R (9) Apply the surface protection (Ref. TASK 51-75-12-300-002).
5. Close-up
________
Subtask 51-77-14-942-056
A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
CLEANING PROCESSES - DESCRIPTION AND OPERATION
______________________________________________
1.
General
_______ This topic gives information on the cleaning of the aircraft structure after a spillage or contamination of the structure. A spillage must be removed as soon as possible to prevent damage to the aircraft structure.
2.
Description
___________
A. Type of Contamination
(1)
Sewage Sewage can damage the aircraft metallic components and cause corrosion.
(2)
Hydraulic Fluid Contamination of the aircraft structure with hydraulic fluid, for a long time, will damage the corrosion-protection-paint.
(3)
Acid and Alkali Spillage Acids and alkalies can cause corrosion very quickly and damage the aircraft protective paint finish.
(4)
Fish Container Leakage Contamination of the aircraft structure with fish slime or sea water can cause corrosion to metal structure and components.
CLEANING PROCESSES - CLEANING/PAINTING______________________________________
TASK 51-78-00-615-001
Aircraft Cleaning after a Sewage Leakage
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL MATERIALS_______ ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
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